SmogRank / Graz / Klagenfurt am Wörthersee

Graz vs Klagenfurt am Wörthersee: PM2.5 compared

Over the last year, Graz's air was 40% more polluted than Klagenfurt am Wörthersee's: PM2.5 averaged 14.3 µg/m³ against 10.2, on the 330 days both cities were measured. Graz had the dirtier air on 291 of those days, Klagenfurt am Wörthersee on 38. Graz was over the WHO's daily guideline of 15 µg/m³ on 120 of them, Klagenfurt am Wörthersee on 54.

Right now

Graz#121on the 24-hour board of 1,616, at 70 US AQI (19.5 µg/m³)
Klagenfurt am Wörthersee#307on the 24-hour board of 1,616, at 59 US AQI (13.2 µg/m³)

The last year, day by day

Graz
Klagenfurt am Wörthersee
Each city's daily mean from 6 Oct 2025 to 5 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

15Graz, Nov 2025: 15.4 µg/m³Klagenfurt am Wörthersee, Nov 2025: 10.0 µg/m³Nov 2025Graz, Dec: 19.5 µg/m³Klagenfurt am Wörthersee, Dec: 11.7 µg/m³DecGraz, Jan 2026: 32.6 µg/m³Klagenfurt am Wörthersee, Jan 2026: 24.1 µg/m³Jan 2026Graz, Feb: 19.4 µg/m³Klagenfurt am Wörthersee, Feb: 11.7 µg/m³FebGraz, Mar: 17.2 µg/m³Klagenfurt am Wörthersee, Mar: 11.1 µg/m³MarGraz, Apr: 11.0 µg/m³Klagenfurt am Wörthersee, Apr: 8.3 µg/m³AprGraz, May: 8.1 µg/m³Klagenfurt am Wörthersee, May: 5.2 µg/m³MayGraz, Jun: 8.4 µg/m³Klagenfurt am Wörthersee, Jun: 7.9 µg/m³JunGraz, Jul: 8.4 µg/m³Klagenfurt am Wörthersee, Jul: 7.4 µg/m³JulGraz, Aug: 9.6 µg/m³Klagenfurt am Wörthersee, Aug: 8.6 µg/m³AugGraz, Sep: 8.4 µg/m³Klagenfurt am Wörthersee, Sep: 6.1 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Graz. Faded: Klagenfurt am Wörthersee. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearGrazKlagenfurt am WörtherseeDays both measuredDays Graz was worse
2026 so far6053267235
20256055298232
20246761149107
20236156327242

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Graz

Klagenfurt am Wörthersee

Daily means in US AQI, over the days both cities were measured in the last year. Each date opens that day's world board.

Compare either city with another

Graz

Side by side with Gratkorn, Wolfsberg, Gujranwala.

Klagenfurt am Wörthersee

Side by side with Kranj, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Graz and Klagenfurt am Wörthersee, 22 Oct 2025 – 5 Oct 2026, smogrank.com/compare/at-graz/at-klagenfurt-am-woerthersee (accessed 6 Oct 2026).

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-06 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.